Guideline of detecting range | |||
Alert level |
Range of detected object * |
Distance indicator |
Alarm pattern |
Long proximity ( object detected ) |
35 in ( 90 cm ) or more |
Green |
No warning sound |
Medium proximity alert ( approaching the |
28 to 35 in ( 70 to 90 cm ) |
Yellow |
Short beeps |
object ) |
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Short proximity alert ( approaching closer to the object ) |
20 to 28 in ( 50 to 70 cm ) |
Orange |
Rapid short beeps |
Closest proximity alert ( too close to the object ) |
20 in ( 50 cm ) or less |
Red |
Continuous beep |